cleanup resources

client.go

@@ -969,10 +969,22 @@ func clientDoDeadline(req *Request, resp *Response, deadline time.Time, c client
 	// Without this 'hack' the load on slow host could exceed MaxConns*
 	// concurrent requests, since timed out requests on client side
 	// usually continue execution on the host.
-
+
+	cleanup := false
 	go func() {
 		errDo := c.Do(reqCopy, respCopy)
-		// cleanup
+		if cleanup {
+			ReleaseResponse(respCopy)
+			ReleaseRequest(reqCopy)
+		} else {
+			ch <- errDo
+		}
+	}()
+
+	tc := acquireTimer(timeout)
+	var err error
+	select {
+	case err = <-ch:
 		if resp != nil {
 			respCopy.copyToSkipBody(resp)
 			swapResponseBody(resp, respCopy)
@@ -981,15 +993,9 @@ func clientDoDeadline(req *Request, resp *Response, deadline time.Time, c client
 		ReleaseResponse(respCopy)
 		ReleaseRequest(reqCopy)
 		errorChPool.Put(chv)
-		ch <- errDo
-	}()
-
-	tc := acquireTimer(timeout)
-	var err error
-	select {
-	case err = <-ch:
-
 	case <-tc.C:
+		cleanup = true
+		errorChPool.Put(chv)
 		err = ErrTimeout
 	}
 	releaseTimer(tc)